From c8e239d0cf835d987a721375ac4002209f17eff4 Mon Sep 17 00:00:00 2001
From: chai2010 <chaishushan@gmail.com>
Date: Wed, 10 Jan 2018 10:43:19 +0800
Subject: [PATCH] =?UTF-8?q?ch2:=20=E5=A2=9E=E5=8A=A0=E4=B8=80=E4=B8=AA?=
 =?UTF-8?q?=E4=BE=8B=E5=AD=90?=
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---
 examples/ch2-xx/return-go-ptr/main.go | 28 +++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 examples/ch2-xx/return-go-ptr/main.go

diff --git a/examples/ch2-xx/return-go-ptr/main.go b/examples/ch2-xx/return-go-ptr/main.go
new file mode 100644
index 0000000..15b51df
--- /dev/null
+++ b/examples/ch2-xx/return-go-ptr/main.go
@@ -0,0 +1,28 @@
+// Copyright © 2017 ChaiShushan <chaishushan{AT}gmail.com>.
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+
+package main
+
+// go run x.go
+// GODEBUG=cgocheck=0 go run x.go
+
+// panic: runtime error: cgo result has Go pointer
+
+/*
+extern int* getGoPtr();
+
+static void Main() {
+	int* p = getGoPtr();
+	*p = 42;
+}
+*/
+import "C"
+
+func main() {
+	C.Main()
+}
+
+//export getGoPtr
+func getGoPtr() *C.int {
+	return new(C.int)
+}